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A Waihi woman has been left traumatised after witnessing the chaos and terror of the Las Vegas shootings, her mother said.

Rosemarie and husband Adrian Parks were travelling with family members Shena Parks her boyfriend Glenn Read , when they were caught up in the shooting which killed at least 59 people and injured 527 on Monday night (NZ time).

Shena Parks and Mr Read were about 500m from where gunman Stephen Paddock opened fire from the 32nd floor of the Mandalay Bay Resort.

Jean Holmes, the mother of Rosemarie, said her daughter was traumatised by the mass killing.

She was standing opposite the Mandalay listening to the concert when the shooting happened. The sight of injured people being stretchered past her was too much, she said.

"The last I heard Rosemarie was very, very upset because of what she saw."

She said police surrounded them and put them into groups.

"Each group was guided by a policeman and they moved them slowly from building to building and they weren't allowed to separate."

She said Rosemarie and Adrian were worried they would miss their scheduled 5am flight to Florida, but they got to the airport on time.

Ms Holmes said it would not put the couple off travelling to Las Vegas after they got married there five years ago.

"They go there every year for their wedding anniversary. It won't put them off. It wouldn't put me off, either, it's a wonderful place. This is just such a terrible thing to have happened."

Tauranga travel agent Kay Rogers, of United Travel, said no clients were in Las Vegas, but people were increasingly concerned about potential attacks while travelling.

"I think everybody is still reeling from what's happened. The common trend these days is to stay away from crowded places."

Meanwhile, a Tauranga hotel offering a Las Vegas-themed Christmas party says it plans to continue with the event.

Hotel Armitage is offering a Christmas party with a Vegas theme on November 25. It would offer roulette and blackjack tables as part of the overall atmosphere.

Manager Nick Caffardo said the hotel had not received any negative feedback about the party after Monday night's (NZ time) massacre.

"I do believe obviously the community and our customers will have the common sense to make a difference between what happened and what we are trying to achieve at the Armitage... which is to provide our community and local businesses with a Xmas function option combining entertainment, great service and great food all under the same roof."

Mr Caffardo said the party had been planned months ago.

"We are not part of this tragedy and we condemn this kind of behaviour."